Wing Tanks & CTR tank pumps relation with slat
i would like to add some points i have gained from my type course:
presueming a/c tanks are full, during engine start CTR pumps runs for 2 min thats to check the pumps runs properly and then stops, at this time during taxing the design logic to burn some fuel from wing tanks to give some space for fuel cooling circulation coming from engine Fuel/oil heat exchangers ( cfm & V2500 OIL COOLING SYSTEM).
on cruise phase CTR tanks supply fuel and empties first, this to keep wing tanks with fuel for long as possible, reduce wing structure loads.
just some addition to previouse post
regards